epan/dissectors/packet-isis-clv.h

   1 /* packet-isis-clv.h
   2  * Declares for common clv decoding functions.
   3  *
   4  * Stuart Stanley <stuarts@mxmail.net>
   5  *
   6  * Wireshark - Network traffic analyzer
   7  * By Gerald Combs <gerald@wireshark.org>
   8  * Copyright 1998 Gerald Combs
   9  *
  10  * SPDX-License-Identifier: GPL-2.0-or-later
  11  */
  12
  13 #ifndef _PACKET_ISIS_CLV_H
  14 #define _PACKET_ISIS_CLV_H
  15
  16 /*
  17  * A CLV is a tuple of a type, length and a value and is normally used for
  18  * encoding information in all sorts of places.
  19  * IS-IS uses a uniform CLV code space that is shared across
  20  * all PDU Types.
  21  *
  22  * list taken from rfc3359 plus some memory from veterans ;-)
  23  *
  24  * http://www.iana.org/assignments/isis-tlv-codepoints/isis-tlv-codepoints.xhtml#tlv-codepoints
  25  */
  26
  27 #define ISIS_CLV_AREA_ADDRESS        1   /* iso10589 */
  28 #define ISIS_CLV_IS_REACH            2   /* iso10589 */
  29 #define ISIS_CLV_ES_NEIGHBORS        3   /* iso10589 */
  30 #define ISIS_CLV_PARTITION_DIS       4   /* iso10589 */
  31 #define ISIS_CLV_PREFIX_NEIGHBORS    5   /* iso10589 */
  32 #define ISIS_CLV_IS_NEIGHBORS        6   /* iso10589 */
  33 #define ISIS_CLV_INSTANCE_IDENTIFIER 7   /* rfc6822 */
  34 #define ISIS_CLV_PADDING             8   /* iso10589 */
  35 #define ISIS_CLV_LSP_ENTRIES         9   /* iso10589 */
  36 #define ISIS_CLV_AUTHENTICATION      10  /* iso10589, rfc3567 */
  37 #define ISIS_CLV_CHECKSUM            12  /* rfc3358 */
  38 #define ISIS_CLV_PURGE_ORIG_ID       13  /* rfc6232 */
  39 #define ISIS_CLV_LSP_BUFFERSIZE      14  /* iso10589 rev2 */
  40 #define ISIS_CLV_REVERSE_METRIC      16  /* rfc8500 */
  41 #define ISIS_CLV_EXTD_IS_REACH       22  /* draft-ietf-isis-traffic-05 */
  42 #define ISIS_CLV_IS_ALIAS_ID         24  /* draft-ietf-isis-ext-lsp-frags-02 */
  43 #define ISIS_CLV_SRV6_LOCATOR        27  /* rfc9352 */
  44 #define ISIS_CLV_INT_IP_REACH        128 /* rfc1195, rfc2966 */
  45 #define ISIS_CLV_PROTOCOLS_SUPPORTED 129 /* rfc1195 */
  46 #define ISIS_CLV_EXT_IP_REACH        130 /* rfc1195, rfc2966 */
  47 #define ISIS_CLV_IDRP_INFO           131 /* rfc1195 */
  48 #define ISIS_CLV_IP_ADDR             132 /* rfc1195 */
  49 #define ISIS_CLV_IP_AUTHENTICATION   133 /* rfc1195, deprecated in rfc3787 */
  50 #define ISIS_CLV_TE_ROUTER_ID        134 /* draft-ietf-isis-traffic-05 */
  51 #define ISIS_CLV_EXTD_IP_REACH       135 /* draft-ietf-isis-traffic-05 */
  52 #define ISIS_CLV_HOSTNAME            137 /* rfc2763 */
  53 #define ISIS_CLV_SHARED_RISK_GROUP   138 /* rfc5307 */
  54 #define ISIS_CLV_IPV6_SRLG_TLV       139 /* rfc6119 */
  55 #define ISIS_CLV_IPV6_TE_ROUTER_ID   140 /* rfc6119 */
  56 #define ISIS_GRP_ADDR                142 /* rfc7176 */
  57 #define ISIS_CLV_MT_PORT_CAP         143 /* rfc6165, rfc7176 */
  58 #define ISIS_CLV_MT_CAP              144 /* rfc6329, rfc7176 */
  59 #define ISIS_CLV_TRILL_NEIGHBOR      145 /* rfc7176 */
  60 #define ISIS_CLV_MAC_RI              147 /* rfc6165: MAC Reachability */
  61 #define ISIS_CLV_BFD_ENABLED         148 /* rfc6213 */
  62 #define ISIS_CLV_SID_LABEL_BINDING   149 /* draft-previdi-isis-segment-routing-extensions-05 */
  63 #define ISIS_CLV_AVAYA_IPVPN         184 /* Avaya/Extremenetworks proprietary: Reverse engineered */
  64 #define ISIS_CLV_AVAYA_IPVPN_MC      185 /* Avaya/Extremenetworks proprietary: Reverse engineered */
  65 #define ISIS_CLV_AVAYA_IP_GRT_MC     186 /* Avaya/Extremenetworks proprietary: Reverse engineered */
  66 #define ISIS_CLV_RESTART             211 /* draft-ietf-isis-restart-01 */
  67 #define ISIS_CLV_MT_IS_REACH         222 /* draft-ietf-isis-wg-multi-topology-05 */
  68 #define ISIS_CLV_MT_SUPPORTED        229 /* draft-ietf-isis-wg-multi-topology-05 */
  69 #define ISIS_CLV_IP6_ADDR            232 /* draft-ietf-isis-ipv6-02 */
  70 #define ISIS_CLV_IPV6_GBL_INT_ADDR   233 /* rfc6119 */
  71 #define ISIS_CLV_MT_IP_REACH         235 /* draft-ietf-isis-wg-multi-topology-05 */
  72 #define ISIS_CLV_IP6_REACH           236 /* draft-ietf-isis-ipv6-02 */
  73 #define ISIS_CLV_MT_IP6_REACH        237 /* draft-ietf-isis-wg-multi-topology-05 */
  74 #define ISIS_CLV_APPSPEC_SRLG        238 /* rfc9479 */
  75 #define ISIS_CLV_PTP_ADJ_STATE       240 /* rfc3373 */
  76 #define ISIS_CLV_IIH_SEQNR           241 /* draft-shen-isis-iih-sequence-00 */
  77 #define ISIS_CLV_RT_CAPABLE          242 /* rfc4971, rfc7176 */
  78 #define ISIS_CLV_VENDOR_PRIVATE      250 /* draft-ietf-isis-proprietary-tlv-00 */
  79
  80 /*
  81  * Our sub-packet dismantle structure for CLV's
  82  */
  83 typedef struct {
  84         int     optcode;                /* code for option */
  85         const char    *tree_text;       /* text for fold out */
  86         int     *tree_id;               /* id for add_item */
  87         void    (*dissect)(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree,
  88                                 int offset, isis_data_t *isis, int length);
  89 } isis_clv_handle_t;
  90
  91 /*
  92  * Published API functions.  NOTE, this are "local" API functions and
  93  * are only valid from with isis decodes.
  94  */
  95 extern void isis_dissect_clvs(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
  96         const isis_clv_handle_t *opts, expert_field *expert_short_len, isis_data_t *isis,
  97         int unknown_tree_id,  int tree_type, int tree_length, expert_field *ei_unknown);
  98
  99 extern void isis_dissect_nlpid_clv(tvbuff_t *tvb, proto_tree *tree, int ett_nlpid,
 100         int hf_nlpid, int offset, int length);
 101 extern void isis_dissect_te_router_id_clv(proto_tree *tree, packet_info* pinfo, tvbuff_t *tvb, expert_field* expert,
 102         int offset, int length, int tree_id);
 103 extern void isis_dissect_ipv6_int_clv(proto_tree *tree, packet_info* pinfo, tvbuff_t *tvb, expert_field* expert,
 104         int offset, int length, int tree_id);
 105 extern void isis_dissect_ip_int_clv(proto_tree *tree, packet_info* pinfo, tvbuff_t *tvb, expert_field* expert,
 106         int offset, int length, int tree_id);
 107 extern void isis_dissect_mt_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree,
 108         int offset, int length, int tree_id, expert_field* mtid_expert);
 109 extern void isis_dissect_hostname_clv(tvbuff_t *tvb, proto_tree *tree,
 110         int offset, int length, int tree_id);
 111 extern void isis_dissect_authentication_clv(proto_tree *tree, packet_info* pinfo, tvbuff_t *tvb,
 112         int hf_auth_bytes, int hf_key_id, expert_field* auth_expert, int offset, int length);
 113 extern void isis_dissect_area_address_clv(proto_tree *tree, packet_info* pinfo, tvbuff_t *tvb,
 114         expert_field* expert, int hf_area, int offset, int length);
 115 extern void isis_dissect_instance_identifier_clv(proto_tree *tree, packet_info* pinfo, tvbuff_t *tvb,
 116         expert_field* expert, int hf_iid, int hf_supported_itid, int offset, int length);
 117
 118 extern void isis_dissect_metric(tvbuff_t *tvb, proto_tree *tree, int offset,
 119         uint8_t value, char *pstr, int force_supported);
 120
 121 #endif /* _PACKET_ISIS_CLV_H */
 122
 123 /*
 124  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
 125  *
 126  * Local variables:
 127  * c-basic-offset: 4
 128  * tab-width: 8
 129  * indent-tabs-mode: nil
 130  * End:
 131  *
 132  * vi: set shiftwidth=4 tabstop=8 expandtab:
 133  * :indentSize=4:tabSize=8:noTabs=true:
 134  */